{"answers":{"affected":"17 open source packages ship an affected version, including org.apache.tomcat.embed:tomcat-embed-core, tomcat and org.apache.tomcat:tomcat-coyote. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-53506 in the wild and no public exploit code.","fix":"Upgrade org.apache.tomcat.embed:tomcat-embed-core to a fixed version for your release line: 10.1.43, 11.0.9 or 9.0.107.","what":"CVE-2025-53506 is a high-severity denial of service vulnerability in Apache Tomcat, published on 10 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-53506 and fix it if it is affected.\n\nWhat it is: CVE-2025-53506 is a high-severity denial of service vulnerability in Apache Tomcat, published on 10 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-53506 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 10.1.0-M1; fixed in 10.1.43\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 10.1.0-M1; fixed in 10.1.43\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 11.0.0-M1; fixed in 11.0.9\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 11.0.0-M1; fixed in 11.0.9\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 8.5.0 up to 8.5.100; no fix listed\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 8.5.0 up to 8.5.100; no fix listed\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 9.0.0.M1; fixed in 9.0.107\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 9.0.0.M1; fixed in 9.0.107\n- tomcat (Bitnami): affected all versions; fixed in 9.0.107, 10.1.43, 11.0.9\n- org.apache.tomcat:tomcat-coyote (Maven): affected from 10.1.0-M1; fixed in 10.1.43\n- org.apache.tomcat:tomcat-coyote (Maven): affected from 10.1.0-M1; fixed in 10.1.43\n- org.apache.tomcat:tomcat-coyote (Maven): affected from 11.0.0-M1; fixed in 11.0.9\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-53506/ (Markdown: https://insights.sbomify.com/CVE-2025-53506/index.md)","id":"CVE-2025-53506","markdown":"https://insights.sbomify.com/CVE-2025-53506/index.md","name":"CVE-2025-53506","record":{"aliases":["BIT-tomcat-2025-53506","DEBIAN-CVE-2025-53506","GHSA-25xr-qj8w-c4vf","MINI-4h6v-p7v8-p24c","MINI-5x2j-9vh8-h88j","MINI-993j-xmpc-46fq","MINI-9rc2-5r7g-cjfq","MINI-q73m-7p37-79cg","MINI-w334-rjm7-g6qf","ROOT-APP-MAVEN-CVE-2025-53506","UBUNTU-CVE-2025-53506"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Apache Tomcat","requires_auth":"none","summary":"An attacker can cause a denial of service in Apache Tomcat by sending excessive HTTP/2 streams before acknowledging initial settings.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"tomcat","vendor":"apache"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Uncontrolled Resource Consumption vulnerability in Apache Tomcat if an HTTP/2 client did not acknowledge the initial settings frame that reduces the maximum permitted concurrent streams.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, from 9.0.0.M1 through 9.0.106.\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: 8.5.0 through 8.5.100. Other EOL versions may also be affected.\n\nUsers are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.","ecosystems":["Bitnami","Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Apache Tomcat: DoS via excessive h2 streams at connection start","id":"CVE-2025-53506","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"apache:tomcat","products":["apache:tomcat"],"type":"denial_of_service","year":"2025"},"n_packages":17,"n_references":1,"next":{"headline":"Information disclosure in F2L Assist-SS-A","id":"CVE-2025-53507"},"packages":[{"ecosystem":"Bitnami","fixed":["9.0.107","10.1.43","11.0.9"],"introduced":["0","10.0.0","11.0.0"],"last_affected":[],"package":"tomcat","purl":"pkg:bitnami/tomcat","source":"BIT-tomcat-2025-53506"},{"ecosystem":"Maven","fixed":["10.1.43"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":null,"source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":["10.1.43"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":["11.0.9"],"introduced":["11.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":null,"source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":["11.0.9"],"introduced":["11.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":[],"introduced":["8.5.0"],"last_affected":["8.5.100"],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":null,"source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":[],"introduced":["8.5.0"],"last_affected":["8.5.100"],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":["9.0.107"],"introduced":["9.0.0.M1"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":null,"source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":["9.0.107"],"introduced":["9.0.0.M1"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":["10.1.43"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat-coyote","purl":null,"source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":["10.1.43"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat-coyote","purl":"pkg:maven/org.apache.tomcat/tomcat-coyote","source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":["11.0.9"],"introduced":["11.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat-coyote","purl":null,"source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":["11.0.9"],"introduced":["11.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat-coyote","purl":"pkg:maven/org.apache.tomcat/tomcat-coyote","source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":[],"introduced":["8.5.0"],"last_affected":["8.5.100"],"package":"org.apache.tomcat:tomcat-coyote","purl":null,"source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":[],"introduced":["8.5.0"],"last_affected":["8.5.100"],"package":"org.apache.tomcat:tomcat-coyote","purl":"pkg:maven/org.apache.tomcat/tomcat-coyote","source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":["9.0.107"],"introduced":["9.0.0.M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat-coyote","purl":null,"source":"GHSA-25xr-qj8w-c4vf"},{"ecosystem":"Maven","fixed":["9.0.107"],"introduced":["9.0.0.M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat-coyote","purl":"pkg:maven/org.apache.tomcat/tomcat-coyote","source":"GHSA-25xr-qj8w-c4vf"}],"prev":{"headline":"Path traversal in Group-Office","id":"CVE-2025-53505"},"products":["Apache Tomcat"],"published":"2025-07-10","related":[{"cvss_score":10,"headline":"Apache Tomcat Path Equivalence","id":"CVE-2025-24813","kev_date_added":"2025-04-01","published":"2025-03-10"},{"cvss_score":9.8,"headline":"Apache Tomcat Remote Code Execution","id":"CVE-2016-8735","kev_date_added":"2023-05-12","published":"2017-04-06"},{"cvss_score":8.1,"headline":"Apache Tomcat Remote Code Execution","id":"CVE-2017-12617","kev_date_added":"2022-03-25","published":"2017-10-03"},{"cvss_score":8.1,"headline":"Apache Tomcat on Windows Remote Code Execution","id":"CVE-2017-12615","kev_date_added":"2022-03-25","published":"2017-09-19"},{"cvss_score":7.5,"headline":"Apache Tomcat Missing Encryption of Sensitive Data","id":"CVE-2026-34486","kev_date_added":"2026-08-04","published":"2026-04-09"},{"cvss_score":9.8,"headline":"Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incomplete","id":"CVE-2026-65637","kev_date_added":null,"published":"2026-08-25"},{"cvss_score":9.8,"headline":"Apache Tomcat: Limited replay attack possible with DIGEST authentication","id":"CVE-2026-65905","kev_date_added":null,"published":"2026-08-25"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-11-04","vendors":["Apache Software Foundation"]},"summary":"An attacker can cause a denial of service in Apache Tomcat by sending excessive HTTP/2 streams before acknowledging initial settings.","url":"https://insights.sbomify.com/CVE-2025-53506/"}